Boiler-tube cleaner.



No. 842,311. I PATENTED JAN. 29, 1907.

c. GOTTWALD.

BOILER TUBE CLEANER.

APPLIGATION FILED FEB. 1, 1906.

' 2 SHEETS-SHEET 1 WITNESSES. I l/VVE/VTUR N6. 842,311. PATENTED JAN. 29, 1907.

0. GOTTWALD.

2 SHEETSSHEET 2.

v WITNESSES: I l I 1% g/ 6.. 7M

urr srrns CHRISTIAN GOTTWALD, OF CLEVELAND, OHIO.

BLER TUE CLEANER.

To all whom it may concern/.1

Be it known that I, CHRISTIAN GoTTwALD,

- nected to and rotating with the motor, said tool being free to swing in a centrifugal manner, whereby the deposits on the interior of the tube are ra idly and effectively removed.

The object oi apparatus with improved bearings for the rotating parts of the motor and novel means for easily adjusting or caused by the wearing away of the bearlngs.

A further object of my invention is to provide an apparatus with positive lubrication for the bearings, a very essential point in the successful operation of motors of thisclass.

To these ends my invention consists in certain novel features, which i will now proceed to describe'and will then particularly point out in the claims. a

in the accompanying drawings, Figure 1 is a central longitudinal section through the motor. Fig. 2 is a perspective view of the cutting-tool shown detached from the motor. Fig. 3 is a sectional view taken on the line l/V VI of Fig. 1. and looking in the direction of the arrows. Fig. 4 is a sectional view taken on the line X X of Fig. 1 and looking in the'direction of the arrows. Fig. 5 is a sectional view taken on the line Y Y of Fig. 1 and looking in the direction of the arrows. Fig. 6 is a sectional view taken on the line Z Z of Fig. 2 and looking in the direction of the arrows. I

Referrin now to the drawings, 1 indicates an interna screw-thread for attaching the pipe 'of flexible hose which delivers the driving medium.

2 represents the non-rotating part of the motor, which has a diaphragrn'3, through .which are formed inclined passages 4 common to motors of this class.

5 represents a cap attached to the non-r0,- tating part 2 by means of screw-threads 6. The cap is also provided with openings '7 and separated from each other by webs 8,

Specification of Letters Patent. Application filed February 1, 1906. Serial No. 299,030-

my invention is to provide an taking up the play understood by those skilled in the art.

Patented Jan. 29, 1907.

which carry the journal-bearing 9. Mounted in the journal-bearing 9 and held in position by a screw 10 is a hard-metal bushing 11, provided with a flanged head 12. Within the bushing 11 is rotatably mounted a hollow shaft 13, to the inner enlarged end 14 of which is attached by screw-threads 15 the rotating part of the motor 16, which latter is provided with the usual inclined passages 17. At its outer. end the hollow shaft 13 is rovided' with external screw-threads 18 'an internal screw-threads 19. Attached to the journalbearing 9 by means of screw-threads '20 is a ball-bearing cup 21, between which and an-.

other ball-bearing cup 22 is interposed a row of balls 23, which bear in circular grooves 24. A locking-nut 25 serves to hold the ball-bearing cup 22 inposition, both of which en age the external screw-threads 18 on the ho low shaft 13'. An ordinary universahjoint con:

nector 26 engages the internalscrzw-threads 19 of the hollow shaft 13, thus forming a chamber which in operation is filled with lubricating-oil and which by the action of centrifugalforce is positively fed to throu h the small holes 27. A linlr 27 is attached to the connector 26 by a in 28. The cutting-tool 29 is provided wit three radially-disposed inclined wings, which latter have beveled edges a, b c, and said wings are spaced equidistant circumferentially of a central conical core 32, which has at its rear the'bearings end a slot 30, which fits freely over the outer end of the link 27 and is attached thereto by a pin 31.

The operation of the cleaner will be readily The motorfluid enters at 1, passes through the passages 4 and 17 and out through the openings 7 in cap 5. As the cutting-tool is of considerably smaller diameter than the interior of the tube withinwhich it operates, under the action of centrifugal force the tool tends to scrape the side of the tube, thereby removing whatever it cdmes' in contact with. When the tool strikes a deposit which is not readily removed, the deposit causes the tool to rebound from side to side Within the tube, which effectively breaks up such deposit, especiall when of a brittle nature.

ltwill be seen that by my construction of a hollow shaft mounted Witillll. the comparatively long journal -'bearing and held in adjustment by the exterior ball-bearing arrangement, which latter can be large and therefore a strong construction, that the apparatus is ITO very rigid, strong, and easily adjusted. By simply removing the cap from the front art of the non-rotating part of the motor al the parts are accessible for inspection and repairs, a novel feature of my combination. I

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a boiler-tube cleaner, the combination with a non-rotating part having a transverse dia hragm provided with inclined passages, said non-rotating part having a chamber which extends forward from said diaphragm,

a removable journal-bearing mounted on the outer end of said chamber a removable bushing secured within said journal-bearing, its rear face provided with an enlarged flange, a hollow shaft rotatably mounted within said bushing and enlarged at its rear end to conform to the enlarged flange on said bushing, a threaded rear extension on said hollow shaft to receive the rotary part of the motor, and a threaded forward extension to receive a centrifugally acting cutting tool, substantially as described. a

2. y In a boiler-tube cleaner, the combination with a non-rotatingdpart having a transverse diaphragm provide with inclined passages, said non-rotating 'part having a chamber which extends forward from said diaphragm, a removable journal-bearing mounted on the outer end of said chamber, a removable bushing secured within said journal-bearing, its

rear face provided with an enlarged flange, a

hollow shaft rotatably mounted within said bushing and enlarged at its rear end to conform to the enlarged flange on said bushing, a

threaded rear extension on saidhollow. shaft.

to receive the rotary part of said motor, and a threadedforward extension to receive a centrifugally acting cutting tool, said hollow shaft forming an oil-chamber, having com- -municating openings to the bearings, substantially as described.

3.- In aboiler-tube cleaner, the combination with a non-rotating part having a transverse diaphragm provided with inclined passages, said non-rotating part having a chamber which extends forward from said diaphragm,

a removable journal-bearing mounted on the outer end, of said chamber, provided at its outer end with a removable ball-bearing cup, a removable bushing secured within said journal-bearing, its rear face provided with an en larged flange, a hollow shaft rotatablymounted within said bushin ,a threadedrear extension on said hollow s aft to receive the ro 

